﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Navigation;
using System.Windows.Shapes;
using Microsoft.Phone.Controls;
using Microsoft.Phone.Shell;
using System.IO.IsolatedStorage;
using System.Reflection;
using System.IO;
using System.Windows.Resources;
using System.Xml.Linq;

namespace BiHCurrencyConverter
{
    public partial class App : Application
    {
        /// <summary>
        /// Provides easy access to the root frame of the Phone Application.
        /// </summary>
        /// <returns>The root frame of the Phone Application.</returns>
        public PhoneApplicationFrame RootFrame { get; private set; }

        IsolatedStorageSettings settings = IsolatedStorageSettings.ApplicationSettings;
        IsolatedStorageFile fileStore = IsolatedStorageFile.GetUserStoreForApplication();

        Assembly _assembly;
        
        StreamReader _textStreamReader;
        string _textIsolatedStorageReader;


        /// <summary>
        /// Constructor for the Application object.
        /// </summary>
        public App()
        {
            // Global handler for uncaught exceptions. 
            UnhandledException += Application_UnhandledException;

            // Show graphics profiling information while debugging.
            if (System.Diagnostics.Debugger.IsAttached)
            {
                // Display the current frame rate counters.
                Application.Current.Host.Settings.EnableFrameRateCounter = true;

                // Show the areas of the app that are being redrawn in each frame.
                //Application.Current.Host.Settings.EnableRedrawRegions = true;

                // Enable non-production analysis visualization mode, 
                // which shows areas of a page that are being GPU accelerated with a colored overlay.
                //Application.Current.Host.Settings.EnableCacheVisualization = true;
            }

            // Standard Silverlight initialization
            InitializeComponent();

            // Phone-specific initialization
            InitializePhoneApplication();
        }

        // Code to execute when the application is launching (eg, from Start)
        // This code will not execute when the application is reactivated
        private void Application_Launching(object sender, LaunchingEventArgs e)
        {
            //LoadState();

            InitializeCurrencies();


        }



        // Code to execute when the application is activated (brought to foreground)
        // This code will not execute when the application is first launched
        private void Application_Activated(object sender, ActivatedEventArgs e)
        {
            LoadState();
        }

        // Code to execute when the application is deactivated (sent to background)
        // This code will not execute when the application is closing
        private void Application_Deactivated(object sender, DeactivatedEventArgs e)
        {
            SaveState();
        }

        // Code to execute when the application is closing (eg, user hit Back)
        // This code will not execute when the application is deactivated
        private void Application_Closing(object sender, ClosingEventArgs e)
        {
            //SaveState();
        }

        // Code to execute if a navigation fails
        private void RootFrame_NavigationFailed(object sender, NavigationFailedEventArgs e)
        {
            if (System.Diagnostics.Debugger.IsAttached)
            {
                // A navigation has failed; break into the debugger
                System.Diagnostics.Debugger.Break();
            }
        }

        // Code to execute on Unhandled Exceptions
        private void Application_UnhandledException(object sender, ApplicationUnhandledExceptionEventArgs e)
        {
            if (System.Diagnostics.Debugger.IsAttached)
            {
                // An unhandled exception has occurred; break into the debugger
                System.Diagnostics.Debugger.Break();
            }
        }

        private void SaveState()
        {
            PhoneApplicationService phoneAppService = PhoneApplicationService.Current;
            IsolatedStorageSettings phoneAppSettings = IsolatedStorageSettings.ApplicationSettings;

            //phoneAppSettings["ValueToConvert"] = phoneAppService.State["ValueToConvert"];

        }

        private void LoadState()
        {
            PhoneApplicationService phoneAppService = PhoneApplicationService.Current;
            IsolatedStorageSettings phoneAppSettings = IsolatedStorageSettings.ApplicationSettings;

            //string valToConvert = "";

            //if (phoneAppSettings.TryGetValue<string>("ValueToConvert", out valToConvert))
            //{
            //    phoneAppService.State["ValueToConvert"] = valToConvert;
            //}

            

        }

        private void InitializeCurrencies()
        {

            if (!fileStore.FileExists("eurofxref-daily.xml"))
            {

                //Uri uri = new Uri("eurofxref-daily.xml", UriKind.Relative);
                //StreamResourceInfo resourceInfo = Application.GetResourceStream(uri);
                //_textStreamReader = new StreamReader(resourceInfo.Stream);
                XDocument _doc = XDocument.Load("eurofxref-daily.xml");              


                IsolatedStorageFileStream stream = new IsolatedStorageFileStream("eurofxref-daily.xml", FileMode.Create, fileStore);
                try
                {
                    StreamWriter writeFile = new StreamWriter(stream);
                    //writeFile.Write(_textStreamReader);
                    _doc.Save(writeFile);
                    writeFile.Close();
                }
                catch (Exception)
                {

                    throw;
                }
                
            }

            if (!settings.Contains("BAM"))
            {
                settings["BAM"] = 1.95583;
            }

            if (!settings.Contains("EUR"))
            {
                settings["EUR"] = 1.0;
            }

            IsolatedStorageFileStream streamRead = fileStore.OpenFile("eurofxref-daily.xml", FileMode.OpenOrCreate);
            //StreamReader readFile = null;
            try
            {
                XDocument dataDoc = XDocument.Load(streamRead);
                XNamespace gesmes = "http://www.ecb.int/vocabulary/2002-08-01/eurofxref";

                var quotes = from cube1 in dataDoc.Descendants(gesmes + "Cube")
                             from cube2 in cube1.Descendants(gesmes + "Cube")
                             from cube3 in cube2.Descendants(gesmes + "Cube")
                             //.Descendants(gesmes + "Cube").D
                             select new ExchangeRates { Symbol = cube3.Attribute("currency").Value, Rate = double.Parse(cube3.Attribute("rate").Value) }; ;

                //new ExchangeRates { Symbol = quote.Attribute("currency").Value, Rate = double.Parse(quote.Attribute("rate").Value) };

                foreach (var item in quotes)
                {
                    if (!settings.Contains(item.Symbol))
                    {
                        settings[item.Symbol] = item.Rate;
                    }
                    
                }
            }
            catch (Exception)
            {

                throw;
            }

            #region unused 
            //using (IsolatedStorageFileStream stream = new IsolatedStorageFileStream("eurofxref-daily.xml", FileMode.Open, fileStore))
            //{

            //    StreamReader readFile = new StreamReader(stream);
            //    _textIsolatedStorageReader = readFile.ReadToEnd();
            //    readFile.Close();
            //}
            


            //if (!settings.Contains("USD"))
            //{
            //    Uri uri = new Uri("eurofxref-daily.xml", UriKind.Relative);
            //    StreamResourceInfo resourceInfo = Application.GetResourceStream(uri);
            //    _textStreamReader = new StreamReader(resourceInfo.Stream);

            //    XDocument dataDoc = XDocument.Load(_textStreamReader);
            //    XNamespace gesmes = "http://www.ecb.int/vocabulary/2002-08-01/eurofxref";

            //    var quotes = from cube1 in dataDoc.Descendants(gesmes + "Cube")
            //                 from cube2 in cube1.Descendants(gesmes + "Cube")
            //                 from cube3 in cube2.Descendants(gesmes + "Cube")
            //                 //.Descendants(gesmes + "Cube").D
            //                 select new ExchangeRates { Symbol = cube3.Attribute("currency").Value, Rate = double.Parse(cube3.Attribute("rate").Value) }; ;
                             
            //                 //new ExchangeRates { Symbol = quote.Attribute("currency").Value, Rate = double.Parse(quote.Attribute("rate").Value) };

            //    foreach (var item in quotes)
            //    {
            //        settings[item.Symbol] = item.Rate;
            //    }
            //}



            //XDocument dataDoc = XDocument.Load(uri);

            //XNamespace gesmes = "http://www.ecb.int/vocabulary/2002-08-01/eurofxref";


            //var quotes = from quote in dataDoc.Descendants(gesmes+ "Cube") 
            //         select new ExchangeRates { Symbol = quote.Attribute("symbol").Value, Rate = double.Parse(quote.Attribute("price").Value) }; 
            
            
            //foreach (StockQuote stockQuote in quotes) { Debug.WriteLine(stockQuote.Symbol + " : " + stockQuote.Price); }
            

            //if (!settings.Contains("EUR"))
            //{
            //    settings["EUR"] = 1.0;
            //}

            //if (!settings.Contains("USD"))
            //{
            //    settings["USD"] = 1.3195;
            //}

            

            //if (!settings.Contains("HRK"))
            //{
            //    settings["HRK"] = 7.3879;
            //}
            #endregion 

        }

        #region Phone application initialization

        // Avoid double-initialization
        private bool phoneApplicationInitialized = false;

        // Do not add any additional code to this method
        private void InitializePhoneApplication()
        {
            if (phoneApplicationInitialized)
                return;

            // Create the frame but don't set it as RootVisual yet; this allows the splash
            // screen to remain active until the application is ready to render.
            RootFrame = new PhoneApplicationFrame();
            RootFrame.Navigated += CompleteInitializePhoneApplication;

            // Handle navigation failures
            RootFrame.NavigationFailed += RootFrame_NavigationFailed;

            // Ensure we don't initialize again
            phoneApplicationInitialized = true;
        }

        // Do not add any additional code to this method
        private void CompleteInitializePhoneApplication(object sender, NavigationEventArgs e)
        {
            // Set the root visual to allow the application to render
            if (RootVisual != RootFrame)
                RootVisual = RootFrame;

            // Remove this handler since it is no longer needed
            RootFrame.Navigated -= CompleteInitializePhoneApplication;
        }

        #endregion
    }
}